<template>
	<div>
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>添加商品</el-breadcrumb-item>
		</el-breadcrumb>
		<el-card>
			<el-alert title="添加商品信息" type="info" center show-icon :closable="false">
			</el-alert>
			<el-steps :active="active-0" finish-status="success" align-center>
				<el-step title="基本信息"></el-step>
				<el-step title="商品参数"></el-step>
				<el-step title="商品属性"></el-step>
				<el-step title="商品图片"></el-step>
				<el-step title="商品内容"></el-step>
				<el-step title="完成"></el-step>
			</el-steps>

			<el-form :model="addForm" :rules="addFormrRules" ref="addFormRef" label-width="100px" label-position="top">
				<el-tabs tabPosition="left" v-model="active" :before-leave="beforeTagLeave" @tab-click="tabClick">
					<el-tab-pane label="基本信息" name="0">
						  <el-form-item label="商品名称" prop="goods_name">
						    <el-input v-model="addForm.goods_name"></el-input>
						  </el-form-item>
						  <el-form-item label="商品价格" prop="goods_price">
						    <el-input v-model="addForm.goods_price" type="number"></el-input>
						  </el-form-item>
						  <el-form-item label="商品重量" prop="goods_weight" type="number">
						    <el-input v-model="addForm.goods_weight"></el-input>
						  </el-form-item>
						  <el-form-item label="商品数量" prop="goods_number" type="number">
						    <el-input v-model="addForm.goods_number"></el-input>
						  </el-form-item>
						  <el-form-item label="商品分类" prop="goods_cat">
						    <el-cascader :options="cateList" :props="cascaderProps" v-model="addForm.goods_cat" clearable
						    	@change="handleChange" style="width: 300px;">
						    </el-cascader>
						  </el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品参数" name="1">
						<el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
						    <el-checkbox-group v-model="item.attr_vals">
						      <el-checkbox :label="label" v-for="(label,i) in item.attr_vals" :key="i" border style="margin-right: 5px;"></el-checkbox>
						    </el-checkbox-group>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品属性" name="2">
						<el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
						  <el-input v-model="item.attr_vals"></el-input>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品图片" name="3">
						<el-upload
						  action="http://127.0.0.1:8888/api/private/v1/upload"
						  :on-preview="handlePreview"
						  :on-remove="handleRemove"
						  list-type="picture"
						  :headers="headerObj"
						  :on-success="handleSuccess">
						  <el-button size="small" type="primary">点击上传</el-button>
						  <div slot="tip" class="el-upload__tip"></div>
						</el-upload>
					</el-tab-pane>
					<el-tab-pane label="商品内容" name="4">
						  <quill-editor
						    ref="myQuillEditorRef"
						    v-model="addForm.goods_introduce"
						  />
						  <el-button type="primary" @click="add" style="margin-top: 15px;">添加商品</el-button>
					</el-tab-pane>
				</el-tabs>
			</el-form>
		</el-card>
		
		<el-dialog
		  title="图片预览"
		  :visible.sync="previewVisible"
		  width="50%">
		  <img :src="previewPath" style="width: 100%;">
		</el-dialog>
	</div>
</template>

<script>
	export default {
		data() {
			return {
				active: '0',
				addForm:{
					goods_name:'',
					goods_price:0,
					goods_weight:0,
					goods_number:0,
					goods_cat:[],
					pics:[],
					goods_introduce:'',
					attrs:[]
				},
				addFormClone:{},
				addFormrRules:{
					goods_name:[{ required: true, message: '不能为空', trigger: 'blur' }],
					goods_price:[{ required: true, message: '不能为空', trigger: 'blur' }],
					goods_weight:[{ required: true, message: '不能为空', trigger: 'blur' }],
					goods_number:[{ required: true, message: '不能为空', trigger: 'blur' }],
					goods_cat:[{ required: true, message: '不能为空', trigger: 'blur' }]
				},
				cateList:[],
				cascaderProps: {
					value: "cat_id",
					label: "cat_name",
					children: "children",
					expandTrigger: 'hover'
				},
				manyTableData:[],
				onlyTableData:[],
				headerObj:{
					Authorization:window.sessionStorage.getItem('token')
				},
				previewPath:'',
				previewVisible:false
			};
		},
		created() {
			this.getCateList();
		},
		methods:{
			async getCateList() {
				const {
					data: res
				} = await this.$http.get('categories');
				if (res.meta.status !== 200) return this.$message.error('获取数据失败！');
				this.cateList = res.data;
				// console.log(this.cateList);
			},
			handleChange(){
				if (this.addForm.goods_cat.length !== 3) {
					this.addForm.goods_cat = [];
					return this.$message.warning('只允许选择第3级分类');}
			},
			beforeTagLeave(activeName, oldActiveName){
				if(oldActiveName === '0' && this.addForm.goods_cat.length !== 3){
					this.$message.error('请先选择商品类别！');
					return false;
				}
			},
			async tabClick(){
				if(this.active === '1'){
					const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,
					{params:{sel:'many'}});
					if(res.meta.status !== 200) return this.$message.error('获取动态参数失败！');
					// console.log(res.data);
					res.data.forEach(item=>{
						item.attr_vals = item.attr_vals.length === 0?[]:item.attr_vals.split(' ');
					})
					this.manyTableData = res.data;
					console.log(this.manyTableData);
				}else if(this.active === '2'){
					const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,
					{params:{sel:'only'}});
					if(res.meta.status !== 200) return this.$message.error('获取动态参数失败！');
					// console.log(res.data);
					res.data.forEach(item=>{
						item.attr_vals = item.attr_vals.length === 0?[]:item.attr_vals.split(' ');
					})
					this.onlyTableData = res.data;
					console.log(this.onlyTableData);
				}
			},
			handlePreview(file){
				console.log(file);
				this.previewPath = file.response.data.url;
				this.previewVisible = true;
			},
			handleRemove(file){
				// console.log(file);
				const filePath = file.response.data.url;
				const i = this.addForm.pics.findIndex(x=>x.pic===filePath);
				this.addForm.pics.splice(i,1);
				console.log(this.addForm);
			},
			handleSuccess(response){
				const imgInfo = {
						pic:response.data.tmp_path
					}
				this.addForm.pics.push(imgInfo);
				console.log(this.addForm);
			},
			add(){
				this.$refs.addFormRef.validate(async valid=>{
					if(!valid) return this.$message.error('请填写必要的表单项！');
					this.addFormClone = this.addForm;
					console.log(this.addFormClone);
					this.addFormClone.goods_cat = this.addFormClone.goods_cat.join(',');
					console.log(this.addFormClone);
					console.log(this.addForm);
					this.manyTableData.forEach(item=>{
						const newInfo = {
							"attr_id":item.attr_id,
							"attr_value":item.attr_vals.join(' ')
						};
						this.addFormClone.attrs.push(newInfo);
					});
					this.onlyTableData.forEach(item=>{
						const newInfo = {
							"attr_id":item.attr_id,
							"attr_value":item.attr_vals
						};
						this.addFormClone.attrs.push(newInfo);
					});
					const {data:res} = await this.$http.post('goods',
					this.addFormClone);
					if(res.meta.status !== 201) {
						console.log(res)
						return this.$message.error('添加商品失败！');}
					this.$message.success('添加商品成功！');
					this.$router.push('/goods');
				})
			}
		},
		computed:{
			cateId(){
				if(this.addForm.goods_cat.length ===3){
					return this.addForm.goods_cat[2];
				}
				return null;
			}
		}
	}
</script>

<style scopeds>
</style>
